G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4 + x^5 * A(x)^3.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =6a(8) =10a(9) =15a(10) =21a(11) =34a(12) =63a(13) =120a(14) =220a(15) =381a(16) =642a(17) =1102a(18) =1968a(19) =3615a(20) =6658a(21) =12090a(22) =21675a(23) =38820a(24) =70200a(25) =128466a(26) =236583a(27) =435453a(28) =798798a(29) =1462933